Measurement and control system for hydraulic test

Abstract

The invention relates to a measurement and control system for a hydraulic test. A system control part is composed of a PLC (programmable logic controller) control cabinet, an industrial personal computer and a printer, a PLC is included in the PLC control cabinet, and the industrial personal computer is used as an upper computer of the PLC and connected with the PLC via a communication cable; a measurement and control pipeline part comprises a gas source supply pipeline, a gas-driving booster pump A, a gas-driving booster pump B, a liquid source supply pipeline, a high hydraulic output pipeline and a liquid unloading pipeline; and the PLC outputs a current control signal to the output end of an electric proportional valve, and the electric proportional valve controls gas pressure and gas flow rate by adjusting the position of a gas inlet valve according to the current control signal and a gas pressure signal which is output in proportion. The measurement and control system can performvarious pressure tests including an intensity test, a burst test for a safety relief device of a container, and a test for the residual deformation rate of the container; automatic control and manualcontrol in the hydraulic test for a fire-fighting product are independent from each other and can be used independently; pressure-boosting speed is adjustable, pressure change and dynamic curve output are detected in time; the measurement and control system is high in pressure control accuracy, small in volume, light in weight and low in energy consumption; multi-level pressure-boosting can be realized; and the measurement and control system has the characteristics of being high in reliability, high in accuracy, easy in operation etc.

Description

technical field [0001] The present invention relates to fire-fighting product inspection equipment, in particular to a hydraulic test measurement and control system, which is used to realize manual or automatic various hydraulic tests, blasting tests, and residual deformation rate tests. Background technique: [0002] The hydraulic test measurement and control system has been developed in China for decades, and the technology has gradually matured. Although some key components still need to be imported, some low-voltage accessories and corresponding software can be domestically produced. In addition, due to price factors, except for enterprises with certain economic strength In addition to using this system, most of them use the old-fashioned hydraulic measurement and control system. [0003] Most of the old hydraulic measurement and control systems have the following problems: [0004] 1. Automatic control cannot be realized, manual control is required; 2. The ...

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Problems solved by technology

[0004] 1. Automatic control cannot be realized, manual control is required; 2. The boost rate cannot be automatically adjusted, and the same boost rate test is used for

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